Presentation: Match Analysis with Notational Data

Slide 1 of 7 · Settling starter · PE · Year 9

3 minutes

Match analysis with notational data: where was the game lost?

You have a worksheet with a 40-event coded log from the third quarter of a Year 9 netball match between Llanbedr and Pentre Isaf. Llanbedr were winning at half-time and lost by 1 goal. Today you tally the log, finish the match summary, draw a chart and find out from the numbers where the game was lost. Nobody exercises today.

While the register is called: write your name, class and date on your worksheet, then read The code key and the Coach’s notes in the grey box.

Starter question: Which 2 codes mean Llanbedr gave the ball away without shooting, and which 2 positions are the only ones allowed to shoot?

DCF: Data and computational thinking → Data and information literacy No computers needed · calculator, ruler and pencil on the desk

Supply teacher script (no subject knowledge needed)

Hand out: one worksheet per pupil. Calculators are allowed, and each pupil needs a ruler and pencil for the chart. The whole event log is printed on the worksheet, so no computers are needed; the same log is the file netball-quarter-three-log.csv if you happen to be in a computer room. Both teams, the players and the match are invented. Pupils stay seated all lesson.

Say aloud: “Name, class and date at the top. While I take the register, read the code key and the coach’s notes. Notational analysis means an observer writes a short code for every event in a match, so the match becomes numbers. Find the 2 codes that mean the ball was given away, and the 2 positions that are allowed to shoot.”

Starter answer: the 2 giveaway codes are X (pass lost) and E (other error: footwork, holding the ball over 3 seconds, offside). Together these are called turnovers. Only GS (Goal Shooter) and GA (Goal Attack) may shoot. The coach’s note that matters most: at half-time the usual Centre came off with a sore ankle and a substitute who normally plays Wing Defence played Centre for the whole third quarter.

Slide 2 of 7 · Today’s brief and key words · PE · Year 9

2 minutes

Your brief: tally, summarise, chart, then explain with numbers

You will tally the 40 events (Step 1), count the turnovers by position (Step 2), complete the match summary with pass completion and shooting percentages for every quarter (Step 3), draw a paired bar chart of goals scored and conceded (Step 4), and answer 5 analysis questions, quoting a number every time (Step 5).

Notational analysis

Turning a match into numbers: an observer writes a short code for every event as it happens, then the codes are counted.

Turnover

Any time Llanbedr gave the ball away without shooting: every X (pass lost) and every E (other error).

Pass completion %

Passes completed divided by passes attempted (P + X), times 100. Shooting % is goals divided by shots (G + M), times 100.

DCF: Data and computational thinking → Data and information literacy LNF: Numeracy → Statistics → Interpreting data

Slide 3 of 7 · Steps 1 and 2: tally and turnovers · PE · Year 9

12 minutes

Step 1 & Step 2 on your worksheet: tally all 40 events, then count the turnovers

Step 1 (7 min): go down the log in order and tally every code in groups of 5. Your 6 totals must add up to 40. Step 2 (5 min): go back through the log and count every X and E by position, then work out the Centre’s pass completion. Row 1 of the tally is on the board; copy it.

Code	Meaning	Tally	Total
P	Pass completed	\|\|\|\| \|\|\|\| \|\|\|\| \|\|\|\| \|\|\|\|	24

Steps 1 and 2 on your worksheet · 12 minutes Check: the 6 totals must add up to 40

Supply teacher script (no subject knowledge needed)

Say aloud: “The P row is on the board: 24 completed passes. Copy it, then tally the other 5 codes. Tick each line of the log as you count it. When you finish, add your 6 totals: if they do not make 40 you have missed or double-counted a line. Then count the turnovers, every X and every E, by position.”

Quick check, Step 1: P 24, X 6, G 3, M 4, I 1, E 2. 24 + 6 + 3 + 4 + 1 + 2 = 40. This is the one check you can make without knowing netball.

Quick check, Step 2: Centre: 4 passes lost (events 5, 8, 21, 29) and 1 other error (event 20), so 5 turnovers. All other positions together: 2 passes lost (WA event 16, GA event 34) and 1 error (GS event 37), so 3. Whole team: 6 + 2 = 8. Centre’s pass completion: 10 completed out of 14 attempted (10 + 4), 10 ÷ 14 × 100 = 71.4%.

Slide 4 of 7 · Step 3: the match summary · PE · Year 9

11 minutes

Step 3 on your worksheet: complete the match summary and the running score

Copy your third-quarter totals into the Q3 row, then fill every blank. Passes attempted = P + X. Pass completion % = completed ÷ attempted × 100. Shots = G + M. Shooting % = goals ÷ shots × 100. Round to 1 decimal place. The Q1 row is finished on the board; copy its 2 percentages.

Quarter	Passes attempted	Passes completed	Pass completion %	Shots	Goals	Shooting %	Interceptions won	Other errors	Goals conceded
Q1	40	36	90.0	9	7	77.8	3	1	5

Match row: add the 4 quarters first, then work the percentages out from the match totals. Do not average the 4 percentages.

Step 3 on your worksheet · 11 minutes Running score: Llanbedr first, after each quarter

Supply teacher script (no subject knowledge needed)

Say aloud: “Q1 is on the board: 36 out of 40 is 90.0%, 7 out of 9 is 77.8%. Copy those, then do Q2, your own Q3 figures, Q4, and the match row. For the match row add the quarters up first and then divide; averaging the 4 percentages gives a wrong answer. Finish with the running score, Llanbedr first.”

Quick check: Q2 pass completion 88.6, shooting 80.0. Q3: attempted 30, completed 24, 80.0%, shots 7, goals 3, 42.9%, interceptions 1, errors 2, conceded 9. Q4 pass completion 86.8, shooting 75.0. Match: 152 attempted, 132 completed, 86.8%; 34 shots, 24 goals, 70.6%; 10 interceptions, 6 errors, 25 conceded.

Running score: after Q1 7 to 5, half-time 15 to 11, after Q3 18 to 20, full time 24 to 25. Llanbedr won every quarter except the third.

Slide 5 of 7 · Steps 4 and 5: chart, then analysis · PE · Year 9

17 minutes

Step 4 & Step 5 on your worksheet: draw the chart, then tell the coach what the data says

Step 4 (8 min): draw a pair of bars for each quarter, goals scored and goals conceded. Shade the 2 kinds differently (solid and striped) so it works in black and white. Add a key and a title that names both teams and what is measured. Step 5 (9 min): answer (a) to (e) in full sentences. Every answer quotes a number from your tables.

Quarter	Llanbedr scored (solid bar)	Llanbedr conceded (striped bar)
Q1	7	5

Title model: Llanbedr v Pentre Isaf: goals scored and conceded in each quarter.

Steps 4 and 5 on your worksheet · 17 minutes Use a ruler · one quarter’s striped bar will stand out

Supply teacher script (no subject knowledge needed)

Say aloud: “The Q1 pair is on the board: a solid bar to 7 and a striped bar to 5. Draw all 8 bars with a ruler, fill in the key and copy or improve the title. Then the 5 questions: full sentences, and every answer must quote a number from your tables.”

Quick check, the chart: bars are Q1 7 and 5, Q2 8 and 6, Q3 3 and 9, Q4 6 and 5. Q3 is the only quarter where the conceded bar is taller.

Quick check, Step 5: (a) lost in the third quarter: 15 to 11 up at half-time, then scored 3 and conceded 9, so 18 to 20 down; they won the other 3 quarters by 2, 2 and 1. (b) the Centre completed 71.4% (10 of 14) against 87.5% (14 of 16) for the rest, and made 5 of the 8 turnovers; the coach’s notes say the substitute Centre normally plays Wing Defence, so she was out of position, and when the Wing Attack moved to Centre in Q4 completion went back up to 86.8%. (c) 42.9% is only 3 goals from 7 shots; 1 more goal would make it 57.1%, and the real drop was in the number of shots (7 against 9 or 10) because turnovers stopped the ball reaching the circle. (d) any 2 of: how much pressure a player was under, where on court the ball was lost, anything Pentre Isaf did, and it is 1 observer’s record of 1 match. (e) any 2 coaching points that each quote a number, for example train a second Centre (5 of 8 turnovers, 71.4%) and work on getting the ball into the circle (only 7 shots in Q3, shooters are 70.6% over the match).

Slide 6 of 7 · Self and partner check · PE · Year 9

3 minutes

Swap with your partner and check against the success criteria

Tick each success criterion your partner’s work meets. Then correct 1 thing: a tally that does not add to 40, a percentage not rounded to 1 decimal place, or an answer in Step 5 that gives no number.

I can turn a raw coded log into accurate totals, and I have checked them against the number of events.
I can calculate pass completion % and shooting % correctly, to 1 decimal place, for every quarter and the whole match.
I can draw a paired bar chart with a scale, a key and a title that works in black and white.
I can use the numbers to find where a match was lost and explain it with evidence from the log and the coach’s notes.
I can explain what notational data cannot show, including the danger of percentages built on very few attempts.

3 minutes · partner check Finished early? How long was Llanbedr’s longest spell without a turnover in the third quarter?

Supply teacher script (no subject knowledge needed)

Say aloud: “Swap worksheets. Tick the criteria your partner has met. Check their 6 totals add to 40, their percentages have 1 decimal place, and every Step 5 answer quotes a number. Swap back and correct 1 thing.”

Extension answers: the longest spell without a turnover ran from event 21 at 05:25 to event 29 at 07:13, which is 1 minute 48 seconds. For the interceptions question, 2 possible explanations are that the defence were tired or that Pentre Isaf kept the ball away from Llanbedr’s defenders; logging Pentre Isaf’s actions, or where on court each event happened, would tell you which. A good home-made code key has 6 codes at most, each something an observer could spot and write in under 2 seconds.

Slide 7 of 7 · Plenary review · PE · Year 9

2 minutes

Round the room, then quick-check answers before handing in

Everyone gives 1 number from their tables and says what it proves, nobody repeats one. Then check these answers.

Question	Correct answer
In which quarter was the match lost, and by how many goals?	The third quarter, by 6: scored 3, conceded 9. Llanbedr won the other 3 quarters.
What was the Centre’s pass completion in the third quarter?	71.4% (10 of 14), against 87.5% for the rest of the team.
Why should the 42.9% shooting figure be treated with care?	It is built on only 7 shots. 1 more goal would make it 57.1%.

Check your name and class are on your worksheet Worksheets in, chart and all · calculators and rulers back